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Finding the Fourth Proportional to 584,671.72, 806,847.78 and 316,399.72

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Solution

The fourth proportional to 584,671.72, 806,847.78 and 316,399.72 is: 436,632.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    584,671.72 : 806,847.78 = 316,399.72 : x
  2. Step 2: Convert to fraction form
    584,671.72/806,847.78 = 316,399.72/x
  3. Step 3: Cross multiply
    584,671.72x = 806,847.78 × 316,399.72
  4. Step 4: Simplify right side
    584,671.72x = 255,286,411,674.62
  5. Step 5: Solve for x
    x = 255,286,411,674.62/584,671.72
  6. Step 6: Final answer
    x = 436,632.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.